解决Android从相册中获取图片出错图片却无法裁剪问题的方法

import java.io.File; import java.io.FileNotFoundException; import java.io.IOException;  import android.app.Activity; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.net.Uri; import android.os.Bundle; import android.os.Environment; import android.provider.MediaStore; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.ImageView; import android.widget.Toast;  public class MainActivity extends Activity {   public static final int CUT_PICTURE = 1;   public static final int SHOW_PICTURE = 2;   private Button takePhoto;   private Button chooseFromAlbum;   private ImageView picture;   private Uri imageUri;   @Override  protected void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.activity_main);   takePhoto = (Button) findViewById(R.id.take_photo);   chooseFromAlbum = (Button) findViewById(R.id.choose_from_album);   picture = (ImageView) findViewById(R.id.picture);    takePhoto.setOnClickListener(new OnClickListener() {    @Override    public void onClick(View v) {     //创建File对象，用于存储拍照后的图片     //将此图片存储于SD卡的根目录下     File outputImage = new File(Environment.getExternalStorageDirectory(),       "output_image.jpg");     try {      if (outputImage.exists()) {       outputImage.delete();      }      outputImage.createNewFile();     } catch (IOException e) {      e.printStackTrace();     }     //将File对象转换成Uri对象     //Uri表标识着图片的地址     imageUri = Uri.fromFile(outputImage);     //隐式调用照相机程序     Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");     //拍下的照片会被输出到output_image.jpg中去     intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);     //此处是使用的startActivityForResult（）     //因此在拍照完后悔有结果返回到onActivityResult（）中去，返回值即为TAKE_PHOTO     //onActivityResult（）中主要是实现图片裁剪     startActivityForResult(intent, CUT_PICTURE);    }   });    chooseFromAlbum.setOnClickListener(new OnClickListener() {    @Override    public void onClick(View v) {     File outputImage = new File(Environment.getExternalStorageDirectory(),       "output_image.jpg");     imageUri = Uri.fromFile(outputImage);      try {      if (outputImage.exists()) {       outputImage.delete();      }      outputImage.createNewFile();     } catch (IOException e) {      e.printStackTrace();     }     Intent intent = new Intent(Intent.ACTION_PICK,null);     //此处调用了图片选择器     //如果直接写intent.setDataAndType("image/*");     //调用的是系统图库     intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*");     intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);     startActivityForResult(intent, CUT_PICTURE);    }   });  }    @Override  protected void onActivityResult(int requestCode, int resultCode, Intent data) {   switch (requestCode) {   case CUT_PICTURE:    if (resultCode == RESULT_OK) {     //此处启动裁剪程序     Intent intent = new Intent("com.android.camera.action.CROP");     //此处注释掉的部分是针对android 4.4路径修改的一个测试     //有兴趣的读者可以自己调试看看     String text=imageUri.toString();     Toast.makeText(MainActivity.this, text, Toast.LENGTH_SHORT).show();     intent.setDataAndType(data.getData(), "image/*");     intent.putExtra("scale", true);     intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);     startActivityForResult(intent, SHOW_PICTURE);    }    break;   case SHOW_PICTURE:    if (resultCode == RESULT_OK) {     try {      //将output_image.jpg对象解析成Bitmap对象，然后设置到ImageView中显示出来      Bitmap bitmap = BitmapFactory.decodeStream(getContentResolver()        .openInputStream(imageUri));      picture.setImageBitmap(bitmap);     } catch (FileNotFoundException e) {      e.printStackTrace();     }    }    break;   default:    break;   }  }    }